From patchwork Tue Jan 19 19:11:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jakub Kicinski X-Patchwork-Id: 12030577 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E20C6C433E9 for ; Tue, 19 Jan 2021 19:32:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 962E02310B for ; Tue, 19 Jan 2021 19:32:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387728AbhASTcd (ORCPT ); Tue, 19 Jan 2021 14:32:33 -0500 Received: from mail.kernel.org ([198.145.29.99]:40806 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392248AbhASTMy (ORCPT ); Tue, 19 Jan 2021 14:12:54 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 1B06223107; Tue, 19 Jan 2021 19:12:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1611083534; bh=nbOsQfBLsselG8ejr8u/V2kULbYmqE4TBTzu/PVXY8c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=k5QGlNSB8xo59wZ4OEIcFdfVEPda6uKo52nHFegTzYfi7/fHQNfV0LYC41U8CAMxZ kWuL9QOG2VeZAyadvYO0wL459qyzbTz+iuYbBHTobYIph0gCu7rD9wh0UvQkZigq30 iZTOLfejUei0aZHmDns44Whqpj57UNcmwhSPF9ZovgS6xlveNajxskeQonTKrg44gr xJ6SS8VyzMEGvtqnhzAOLV1yIhCYwCu8Dx1CWIsQHCJ9MEHoAxQLOezFMui0506fKh WBAgpM4ygWoHpEmLLzXV5oSLW99McZUHV+QsVvle2yYCWF/1d3gSE+oppENHM+Yrp6 a5qotfSKsumdw== From: Jakub Kicinski To: davem@davemloft.net Cc: netdev@vger.kernel.org, Jakub Kicinski Subject: [PATCH net-next 4/4] net: inline rollback_registered_many() Date: Tue, 19 Jan 2021 11:11:58 -0800 Message-Id: <20210119191158.3093099-5-kuba@kernel.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210119191158.3093099-1-kuba@kernel.org> References: <20210119191158.3093099-1-kuba@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Similar to the change for rollback_registered() - rollback_registered_many() was a part of unregister_netdevice_many() minus the net_set_todo(), which is no longer needed. Functionally this patch moves the list_empty() check back after: BUG_ON(dev_boot_phase); ASSERT_RTNL(); but I can't find any reason why that would be an issue. Signed-off-by: Jakub Kicinski --- net/core/dev.c | 19 ++++++------------- 1 file changed, 6 insertions(+), 13 deletions(-) diff --git a/net/core/dev.c b/net/core/dev.c index a7841d03c910..fd1da943cfb9 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -5709,7 +5709,7 @@ static void flush_all_backlogs(void) } /* we can have in flight packet[s] on the cpus we are not flushing, - * synchronize_net() in rollback_registered_many() will take care of + * synchronize_net() in unregister_netdevice_many() will take care of * them */ for_each_cpu(cpu, &flush_cpus) @@ -10605,8 +10605,6 @@ void synchronize_net(void) } EXPORT_SYMBOL(synchronize_net); -static void rollback_registered_many(struct list_head *head); - /** * unregister_netdevice_queue - remove device from the kernel * @dev: device @@ -10630,7 +10628,7 @@ void unregister_netdevice_queue(struct net_device *dev, struct list_head *head) LIST_HEAD(single); list_add(&dev->unreg_list, &single); - rollback_registered_many(&single); + unregister_netdevice_many(&single); list_del(&single); } } @@ -10644,15 +10642,6 @@ EXPORT_SYMBOL(unregister_netdevice_queue); * we force a list_del() to make sure stack wont be corrupted later. */ void unregister_netdevice_many(struct list_head *head) -{ - if (!list_empty(head)) { - rollback_registered_many(head); - list_del(head); - } -} -EXPORT_SYMBOL(unregister_netdevice_many); - -static void rollback_registered_many(struct list_head *head) { struct net_device *dev, *tmp; LIST_HEAD(close_head); @@ -10660,6 +10649,9 @@ static void rollback_registered_many(struct list_head *head) BUG_ON(dev_boot_phase); ASSERT_RTNL(); + if (list_empty(head)) + return; + list_for_each_entry_safe(dev, tmp, head, unreg_list) { /* Some devices call without registering * for initialization unwind. Remove those @@ -10744,6 +10736,7 @@ static void rollback_registered_many(struct list_head *head) net_set_todo(dev); } } +EXPORT_SYMBOL(unregister_netdevice_many); /** * unregister_netdev - remove device from the kernel